When you want to evaluate the motion of objects such as a vehicle in motion or an engine in operation, what you can typically measure is only the translational components at a point on the object.
However, when the motion includes six degrees component, measuring only translational acceleration cannot capture the object’s motion.
At ESTECH, it is possible to estimate the rigid-body motion (three translational directions and three rotational directions) at arbitral point when the test article is assumed to be a rigid body.
This rigid-body motion estimation method supports both time-domain data and frequency-domain complex data.
In addition, motion data at arbitral points can be estimated by extrapolation, making it possible to evaluate motion at points outside of object. For example, the printed ink tracks of jet printer, outside of ink injector, could be estimated by measured accelerations on ink carrige.
Examples of applications of this method are as follows.
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Vibration response and durability/strength simulations of auxiliaries based on actual engine operation
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Understanding vehicle motion behavior (no need to measure angular velocity with a gyro)
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Prediction of banding performance in printing machines
Furthermore, by estimating rigid-body motion, it is possible to: -
Furthermore, by estimating rigid-body motion, it is possible to:
Separate the influence of elastic deformation of the test article on the motion at the measurement points. -
Inertia property estimation
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Creation of a transfer-function synthesis model
Such applications are also possible.
